<div class="wrapper">
    <div class="button-container">
        <button onclick="updateChart('line')">Line</button>
        <button onclick="updateChart('stackedLine')">Stacked Line</button>
        <button onclick="updateChart('normalizedLine')">Normalized Line</button>
        <button onclick="updateChart('area')">Grouped Area</button>
        <button onclick="updateChart('stackedArea')">Stacked Area</button>
        <button onclick="updateChart('normalizedArea')">Normalized Area</button>
    </div>
    <div id="myGrid"></div>
    <div id="myChart"></div>
</div>
